Untitled

public static void DeleteDirectory(Ftp ftp, string remotePath)
{
    Console.WriteLine("Deleting directory: '{0}'",remotePath);

    // change the directory
    ftp.ChangeDirectory(remotePath);

    // delete all files from the remotePath directory
    FtpList files = ftp.GetList();
    for (int i = 0; i < files.Count; i++)
    {
        if (files[i].IsFile)
        {
            Console.WriteLine("Deleting file: '{0}'", files[i].Name);

            ftp.DeleteFile(files[i].Name);
        }
    }

    // delete all subdirectories in the remotePath directory
    for (int i = 0; i < files.Count; i++)
    {
        if (files[i].IsDirectory)
            DeleteDirectory(ftp, files[i].Name);
    }

    // delete this directory
    ftp.ChangeDirectory("..");
    ftp.RemoveDirectory(remotePath);
}